Powering LEDs off X11 3.3v rails?

Hello all,

Forgive me if this is a stupid question; I have almost zero knowledge or experience when it comes to electronics, so I only do things that I’m explicitly told will work.

I’m working on a button box that connects to my SC1’s X11 and X12 ports.

I have three potentiometers connected directly to X11 upper, and I’m connecting 7 buttons to X12 upper.

Five of the buttons are these: https://www.amazon.co.jp/gp/product/B077NCVSG6

Which have a neat glowing LED ring around them.

Is there any reason I can’t power these LED rings off the X11 upper 3.3v supply pin that’s going to my potentiometers?

It appears that it is not documented whether or not the LEDs have integrated series resistors or not. Measuring the led pins with multimeter could give some results, and then it will come to simple LED series resistor sizing calculation if a series resistor is indeed required.

Thank you for your reply, Mika!

The LEDs come with a small pack of resisters, which seem to need to be wired differently based on whether you want ‘LED always on’ functionality, or ‘LED lights up when button pressed’ functionality.

And that aside from ensuring I don’t fry the LEDs themselves, there’s no other issue here?